Yes whether to use them. I personally am thinking that it's too damaged. What you think?
The reason it has scuffed the skirt is because as you say it has got hot and a 9 out of 10 chance is because it ran lean. I have used pistons in worse condition than that and been fine.
Running Crower steel conrods and they're CP forged pistons, hard as nails
Plus bored out to 81.5mm so standard pistons too small, thanks anyway tho!